10^-3W of 5000 A light is directed on a photo electric cell if the current in the cell is o - Physics - Dual Nature Of Radiation And Matter

Question

10^-3W of 5000 A light is directed on a photo electric cell if
the current in the cell is o 16 micro ampere,then find the
percentage of incident photons which produce photoelectrons

Ranjeeta Yadav · Answer

Here , u need to find the efficiency , denoted by η
η = no of electrons emmited / No of
photons incident
= Ne/t / Np/t = photoelectric current / charge
of an electron / Power/ hc/λ

10^-3W of 5000 A light is directed on a photo electric cell.if the current in the cell is o.16 micro ampere,then find the percentage of incident photons which produce photoelectrons